How to Get JDBC Driver Information

package example.jdbc.driver;
 
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.DriverPropertyInfo;
import java.util.Properties;
 
public class Main {
    public static void main(String[] args) throws Exception {
	Class.forName("org.gjt.mm.mysql.Driver");
 
	Properties info = new Properties();
	Driver driver = DriverManager.getDriver("jdbc:mysql://localhost/demo2s");
	System.out.println("driver=" + driver);
	DriverPropertyInfo[] attributes = driver.getPropertyInfo("jdbc:mysql://localhost/demo2s", info);
	System.out.println("attributes=" + attributes);
	// zero length means a connection attempt can be made
	System.out.println("Resolving properties for: " + driver.getClass().getName());
 
	for (int i = 0; i < attributes.length; i++) {
	    // get the property metadata
	    String name = attributes[i].name;
	    String[] choices = attributes[i].choices;
	    boolean required = attributes[i].required;
	    String description = attributes[i].description;
	    // printout property metadata
	    System.out.println(name + " (Required: " + required + ")");
	    if (choices == null) {
		System.out.println(" No choices.");
	    } else {
		System.out.print(" Choices are: ");
		for (int j = 0; j < choices.length; j++) {
		    System.out.print(" " + choices[j]);
		}
	    }
	    System.out.println(" Description: " + description);
	}
 
    }
 
    private static Connection getHSQLConnection() throws Exception {
	Class.forName("org.hsqldb.jdbcDriver");
	System.out.println("Driver Loaded.");
	String url = "jdbc:hsqldb:data/tutorial";
	return DriverManager.getConnection(url, "sa", "");
    }
 
    public static Connection getMySqlConnection() throws Exception {
	String driver = "org.gjt.mm.mysql.Driver";
	String url = "jdbc:mysql://localhost/demo2s";
	String username = "oost";
	String password = "oost";
 
	Class.forName(driver);
	Connection conn = DriverManager.getConnection(url, username, password);
	return conn;
    }
 
    public static Connection getOracleConnection() throws Exception {
	String driver = "oracle.jdbc.driver.OracleDriver";
	String url = "jdbc:oracle:thin:@localhost:1521:caspian";
	String username = "mp";
	String password = "mp2";
 
	Class.forName(driver); // load Oracle driver
	Connection conn = DriverManager.getConnection(url, username, password);
	return conn;
    }
}